I did a search but could not find the answer. I have a 1977 FJ40 with 2F and am missing the sending unit and wires to the firewall to the carb fan. Does anyone know where that sending unit is and what the connection looks like? I can ground the wires I have together and the fan comes on, so the rest of the system appears to be intact. Where does it attach to the motor? Any help is appreciated.